Android Question FTP files in a 4G network Not Downloading or Importing

[Jairo Lizotti]

Hello Good Morning

I have a Sales App Developed in b4a, where the vendors of the company have a config file generated in a desktop system transfered to the FTP in model ".CSV", then In the APP the files are downloaded from the FTP and Imported to the system base.
but when the vendor uses a 4G network to communicate to the FTP, the files always not download, but when the network is in wi-fi, everything occurs in line!
any ideia how i can control a download transference to the FTP in 4G Network?

 

[OliverA]

Where is the FTP file located? On a server locally?

 

[Jairo Lizotti]

Where is the FTP file located? On a server locally?

nope, it's a web server

 

[OliverA]

So it is a public web server? Are you using passive or active FTP? If active, try passive. Many telecom providers use reserved IP addresses which may interfere with active FTP.
Active/passive FTP: http://slacksite.com/other/ftp.html

 

[Erel]

[B4X] Tip: Always set FTP.PassiveMode to True

 

[Jairo Lizotti]

So it is a public web server? Are you using passive or active FTP? If active, try passive. Many telecom providers use reserved IP addresses which may interfere with active FTP.
Active/passive FTP: http://slacksite.com/other/ftp.html

Thanks, for the tip, i have tested and it look funtional until now, setting the passive mode to false

Thank you guys for the quickly help

 

[OliverA]

setting the passive mode to false

Huh? Should it not be True?

[B4X] Tip: Always set FTP.PassiveMode to True